Agreed, and my thinking all along. Coop and Van are solid starters, it's the #3 slot that Puka may fill on most downs, splitting time situationally with Tutu or Skow or possibly McCutcheon. At this point it doesn't make much sense to slot Puka over Van when we haven't seen him yet.
Trips right with those three (Coop, Van, Puka) would be interesting. Tutu can't block and ragardless how we might wish otherwise, he's a speed threat/decoy and that's all.
Down and distance, end zone, 11 or 12 set (if McVay decides to use 2 tight ends) = lots of posibilities. Maybe use for McCutcheon's hands and ability to go up for tightly defended balls along with Coop, and either a revitalized Van or emerging Puka.
McVay will have lots of toys to play with, and Stafford will have a full TC to get to know his receivers - something he didn't have with AR.
It'll be fun to watch, and I think a lot of dirstactors (and opposing D's) will be surprised.